Funny thing is this is probably one of the only times where it actually has a reasonable cause. Instead of "My hair is big because i'm strong" it was like an instant 20 year age increase to his body. That's a lot of hair.

Paper too. That's annoying thing about Japanese. While there are more popular pronunciations of kanji for hair, "kami" is still a valid one. So "kami" has probably (maybe more) three meanings, "god", "paper" and "hair". It's easier to tell apart when you're reading something, because they use three different kanji. In speech, you have to guess which one it is.